Locking device for belt-shifters.



R. H. ENGELBERT.

LOCKING DEVICE FOR BELT SHIFTERS.

APPLICATION FILED APR.25. I913.

Patented Nov. 14, 1916.

//\/ VEN T' OFF.

W TNCE'SEE A TUEY' ilil fifi SEATEfi PATENT FEES RUDOLPH H. ENGELBERT,0F MILXVAJKEE, WISCONSIN, ASSIGNOB, 0F ONE-FOURTH TO HANS E. BIRKI-IOLZ,OF MILXVAUKEE, WISCONSIN, AND ONE-HALF TO INTER- NATIONAL HARVESTERCORPQBATIGN, A CORPORATION OF NEW JERSEY.

LOCKING DEVICE FOR BELT-SHIFTERS.

meager.

Application filed April 25, 1913.

T 0 all whom it may concern Be it known that I, RUDOLPH H. ENGEL- Bnn'r,a citizen of the United States, and resident of Milwaukee, in the countyof Milwaukee and State of l/Visconsin, have invented new and usefulImprovements in Looking Devices for Belt-Shifters, of which thefollowing is a description, reference being had to the accompanyingdrawings, which are a part of this specification.

This invention has for its object to provide means for preventing theslipping of a belt shifter from either the running or the idle position.

It has been customary to provide a means for shifting the belt from afixed pulley to a loose pulley on a countershaft by means of a slidingrod having fork arms embracing the belt and when the belt is inconnection with the loose pulley so as not to drive the machine which isbelted to the countershaft there is no means for positively holding thebelt shifter in this position and the vibration of the machinery andother causes have in a number of cases caused the belt shifter to moveso as to carry the belt from the loose pulley to the fixed pulley andthus unexpectedly start the machinery in operation with injury to theoperator.

The present invention is designed to apply to the ordinary belt shifterin general use and to effectively prevent its changing its positionexcept when it is forcibly operated by hand.

lVith the above and other objects in view the invention consists in thelocking device for belt shifters as herein claimed and all equivalents.

Referring to the accompanying drawings in which like characters ofreference indicate the same parts in different views: Figure 1 is afront elevation of a locking device for belt shifters which constitutesthe form of the invention. Fig. 2 is a sectional view thereof on theplane of line 22 of Fig. 1.

In these drawings 10 indicates a shaft hanger bracket forming a bearingfor a countershaft 11 and 12 is the usual sliding rod forming a part ofthe belt shifter for the countershaft, said sliding rod being slidablymounted in projecting arms 13 of the shaft hanger brackets 10. AU-shaped frame Specification of Letters Patent.

Patented Nov. iei, 1916.

Serial No. 763,490.

1a with the space between its projecting arms sutficient to fit onopposite sides of the hanger bracket 10 is slipped in place thereon sothat the sliding rod 12 passes through openings in said arms as well asthrough its bearings in the hanger bracket. One of the arms of theU-shaped frame has an opening extending lengthwise through it and withinthis opening is fitted a sliding pin 15 bearing at its upper end againsta ball 16 and pressed upwardly against the ball by means of a leafspring 17 on the bottom of the frame and which bears against theprojecting end of said pin as shown in Fig. 1. One or more notches 18are cut in the belt shifter sliding rod 12 and the ball 16 under thepressure of the spring enters these notches to securely lock the beltshifter rod 12 in its different operative positions. The lockingengagement of the ball with the notches of the sliding rod is such thatit may be easily overcome by force in throwing the belt shifter by handin the usual manner, but is sufficient to prevent accidental change inposition of the belt shifter.

This form of the device is adapted for use with the belt shifters thathave been installed without necessitating a material change thereof, theonly actual change in the belt shifter construction being the filing ofthe notches 18 in the sliding rod 12.

It is obvious that various modifications of my invention may be made andit is my intention to cover all such modifications which do not involvea departure from the spirit and scope of my invention as set forth inthe following claims.

What I claim as new is:

1. A locking device for belt shifters, comprising a U-shaped framehaving its arms spaced apart to fit on opposite sides of a hangerbracket and provided with openings through which the sliding rod of thebelt shifter passes, there being a longitudinal opening through one ofthe arms of the frame, a ball contained within the opening, a pinfitting in the opening and bearing on the ball, and a spring secured tothe frame and bearing against the end of the pin for forcing the ballinto a notch of the sliding rod.

2 through Which the sliding rod of a belt 2. A locking device for beltshifters, comcured to said frame and acting to force said prising aU-shaped frame having its arms member into a notch of thejsliding rod.spaced apart to fit on opposite sides of a In testimony whereof, Iafiii; my signahanger bracket and provided with openings ture, inpresence of two Witnesses.

RUDOLPH H. ENGELBERT.

Witnesses: i

R. S. C. CALDWELL, KATHERINE HOLT.

shifter passes, there being another opening in one of the arms of theframe, a member in said other opening, and a flat spring se- Copies ofthis patent may be obtained for five cents each, by addressing theCommissioner of Patents,

' Washington, D. G. V

